Screw-cutting die



(No Model.)

A. G. BRUST.

SCREW CUTTING DIE.

Patented June 26, 1883.

ATTORNEYS INVUNTCR fjW/' WITNESSES 6. fizz UNITED STATES PATENT OEEIcE.

ALBERT G. BRUST, OF UNIONTOWVN, WASHINGTON,ASSIGNOR OF ONE-HALF TOE. W. ANDERSON AND J. 0. SMITH, OF WASHINGTON, DISTRICT OF COLUMBIA.

SC REWrCUTTlNG DIE.

SPECIFICATION forming part of Letters Patent No. 280,128, dated June 26, 1883.

Application filed August 17,1882.

(No model.)

To all whom it may concern.-

Be it known that I, ALBERT G.'BnUsT, a citizen of the United States, and a resident of Uniontown,Washington, District of Columbia, have invented a new and valuable Improvement in Self- Oiling Pipe Gutters; and I do hereby declare that the following is a full, clear, and exact description of the construc tion and operation of the same, reference be- IO ing had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon. Figure 1 is a plan view of. my improved self-oiling pipe-cutter. Fig. 2is a partial lon- I 5 gitudinal sectional view, and Fig. 3 is an en,-

, larged sectional detail view.

This invention has relation to hand pipe cutters and threaders; and it consists in providing the handle of such an instrument with an oil-holding recess and a conduit leading therefrom to the die or cutting-wheel.

The invention also consists in providing, in connection with the oil-chamber in the handle and its dischargingtube or conduit, a press- 2 5 orefeed, whereby the discharge of the oil may be effected in a positive manner, all as hereinafter set forth.

In the accompanying drawings, the letter A designates the central portion or die-chamber of a pipe-threading cutter designed to be operated by hand. B B are the handles thereof, one or both of which may be made hollow or chambered.

0 represents the oil chamber or cavity in 3 5 one of the handles.

From this chamberto the v die-eha1nber A extends a tube or conduit, d, through which, as the instrument is turned around the pipe, the oil flows to the die E. keeping the same constantly lubricated. In the case of a pipe-cutter the mouth of the oilo conduit will open into the recess in which the cutting-wheel revolves.

In order to secure a positive feed, whenneeessary, the oil-chamber is provided ,with a movable piston or plug, G, having a projecting stem, h, and held outward by means of a spring, 70. By pressing the piston inward the oil is readily caused to flow from. the chamber 0 through the conduit (1 to the die or cutting-wheel.

Having described this invention, what I claim, and desire to secure by Letters Patent, 1s

1. A hand pipe threader or cutter having an oil-chamber in the handle and a conduit 5 5 leading therefrom to the die-chamber or cutting-wheel, substantially as specified.

2. A hand pipe threader or cutter having an oil-chamber in the handle, a conduit lead ing therefrom to the die or cutter, and spring- 60 piston in the oil-chamber, forming a pressurefeed, substantially as specified.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

I ALBERT G. BR'UST. Witnesses:

THEO. hIUNGEN,

PHILIP O. lVIASI. 

